Malicious PDF — malware analysis report

Static analysis result for SHA-256 d632378aa55142bf…

MALICIOUS

PDF

53.8 KB Created: 2020-03-29 05:31:58 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 3b08692e085e5f08947db7b6032f267d SHA-1: 6209f3cc02fc2bf8fb806913aa1b4f4c218c6285 SHA-256: d632378aa55142bf5e777699422ae1cd0aa4883ea1b7f7256ccbfb1f277b6c12
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO spam operation. One specific external URI, http://theelfbox.com/uploads/1/3/0/7/130739363/130739363.html#ice+lightning+mage+guide+maplelegends, was also directly extracted. The document body content is heavily obfuscated and appears to be a mix of metadata and the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://theelfbox.com/uploads/1/3/0/7/130739363/130739363.html#ice+lightning+mage+guide+maplelegends PDF link annotation
    • http://plasticosmedina.net/uploads/1/3/0/7/130739836/6a82b4ab7.pdfIn PDF document text
    • http://ancestral-pathways.com/uploads/1/3/0/8/130874613/gikuvanuwoliwol_nupozabasir_derov_zakobaweb.pdfIn PDF document text
    • http://www.sauceis4ever.com/uploads/1/3/0/2/130271072/nuwodakup.pdfIn PDF document text
    • http://heysciences.us/uploads/1/3/0/5/130588830/talesopukafi.pdfIn PDF document text
    • http://order50sixone.com/uploads/1/3/0/6/130605044/sexugadufazaked.pdfIn PDF document text
    • http://thebetterlifepodcast.org/uploads/1/3/0/5/130590420/xikafarawujadi_zowos_disekux.pdfIn PDF document text
    • http://stephengilardi.com/uploads/1/3/0/6/130621988/6de5e610d.pdfIn PDF document text
    • http://secretsoftheuniverse-film.com/uploads/1/3/0/4/130436458/jonugugopo.pdfIn PDF document text
    • http://nestnewhomes.com/uploads/1/3/0/4/130477245/wopomimikapavi.pdfIn PDF document text
    • http://akhdc.com/uploads/1/3/0/5/130538838/7512786.pdfIn PDF document text
    • http://meyer-eng.com/uploads/1/3/0/5/130540083/zajomaposilovu_rurufe_fuvimigekod_migebo.pdfIn PDF document text
    • http://southernpinespetlodgesc.com/uploads/1/3/0/3/130313428/gudazebi_kanupax.pdfIn PDF document text
    • http://www.cartonioscornerjewls.com/uploads/1/3/0/7/130739706/wenifewaxid.pdfIn PDF document text
    • http://www.moodstylehaus.com/uploads/1/3/0/6/130605368/tekevewami.pdfIn PDF document text
    • http://jenreidphotoart.com/uploads/1/3/0/8/130874679/fisutumimimogofuruz.pdfIn PDF document text
    • http://premierpersuasion.com/uploads/1/3/0/5/130588878/ef8570.pdfIn PDF document text
    • http://foreverhemplife.com/uploads/1/3/0/2/130291545/tebovovek.pdfIn PDF document text
    • http://designsbymygirls.com/uploads/1/3/0/5/130589413/6778855.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009da9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA9 8836 bytes
SHA-256: a09ccfbd3d6c6e7579cd1292993c722eced25dd725e34595bb488dd4dcdce7d4
font_01_sfnt_off0000bf9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF9D 2652 bytes
SHA-256: e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea

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